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| Part Number | AT89C5131A-S3SIM | 
| Datasheet | AT89C5131A-S3SIM datasheet | 
| Description | IC MCU 8BIT 32KB FLASH 52PLCC | 
| Manufacturer | Microchip Technology | 
| Series | AT89C513x | 
| Part Status | Obsolete | 
| Core Processor | 80C51 | 
| Core Size | 8-Bit | 
| Speed | 48MHz | 
| Connectivity | I²C, SPI, UART/USART, USB | 
| Peripherals | LED, POR, PWM, WDT | 
| Number of I/O | 34 | 
| Program Memory Size | 32KB (32K x 8) | 
| Program Memory Type | FLASH | 
| EEPROM Size | 4K x 8 | 
| RAM Size | 1.25K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 
| Data Converters | - | 
| Oscillator Type | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | 
| Package / Case | Surface Mount | 
| Supplier Device Package | 52-LCC (J-Lead) | 
| Base Part Number | 52-PLCC (19.15x19.15) |